makes my jaw clench

Today I had a disproportionate cringe-type response when I heard a customer say the following to her friend, "I'm gonna go cop a squat and check out these books." I've heard the phrase 'cop a squat' before, but I had no idea how much I hated it until today. Perhaps it has something to do with the word squat, which has that unpleasant, Carlin-esque awht sound to it. ick.